Need help resuming timeline/audio on layers

I am only guessing as I don't see any other details of your slide configuration. I don't see any impact the Pause timeline on other layers will have clicking the Info icon. As soon as you jump to Info layer, clicking the Info icon would only pause the timeline on the Info layer. The Button 1 layer should always play audio when you jump to it by clicking the Info icon. You may not hear the audio on the Info layer when the timeline ends on this layer. However, you can reset it to the initial state to ensure the audio is played again when you come back to it. Perhaps you should upload your slide (after removing any sensitive information) so we can check for other factors that might be preventing you from setting this slide the way you want.